Report Summary

  • 34

    Performance

    Renders faster than
    55% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 57

    SEO

    Google-friendlier than
    20% of websites

opensubtitles.org

Subtitles - download movie and TV Series subtitles

Page Load Speed

24.4 sec in total

First Response

3.1 sec

Resources Loaded

13.1 sec

Page Rendered

8.2 sec

opensubtitles.org screenshot

About Website

Welcome to opensubtitles.org homepage info - get ready to check Open Subtitles best content for China right away, or after learning these important things about opensubtitles.org

Movie and TV Subtitles in multiple languages, thousands of translated subtitles uploaded daily. Free download from source, API support, millions of users.

Visit opensubtitles.org

Key Findings

We analyzed Opensubtitles.org page load time and found that the first response time was 3.1 sec and then it took 21.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

opensubtitles.org performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

18/100

25%

SI (Speed Index)

Value10.0 s

9/100

10%

TBT (Total Blocking Time)

Value1,040 ms

26/100

30%

CLS (Cumulative Layout Shift)

Value0.022

100/100

15%

TTI (Time to Interactive)

Value8.1 s

41/100

10%

Network Requests Diagram

vip

3072 ms

jquery-ui.min.css

68 ms

jquery.min.js

155 ms

jquery-ui.min.js

153 ms

mobile-detect.min.js

2053 ms

Our browser made a total of 85 requests to load all elements on the main page. We found that 5% of them (4 requests) were addressed to the original Opensubtitles.org, 58% (49 requests) were made to Static.opensubtitles.org and 5% (4 requests) were made to Ads2.opensubtitles.org. The less responsive or slowest element that took the longest time to load (4.9 sec) relates to the external source Cdn.taboola.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (41%)

Content Size

3.3 MB

After Optimization

2.0 MB

In fact, the total size of Opensubtitles.org main page is 3.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 108.1 kB

  • Original 137.6 kB
  • After minification 137.6 kB
  • After compression 29.6 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 108.1 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 22.5 kB

  • Original 1.5 MB
  • After minification 1.5 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Open Subtitles images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 990.5 kB

  • Original 1.4 MB
  • After minification 1.2 MB
  • After compression 398.7 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 990.5 kB or 71% of the original size.

CSS Optimization

-82%

Potential reduce by 243.2 kB

  • Original 298.0 kB
  • After minification 249.6 kB
  • After compression 54.8 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Opensubtitles.org needs all CSS files to be minified and compressed as it can save up to 243.2 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 45 (54%)

Requests Now

84

After Optimization

39

The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Open Subtitles. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

opensubtitles.org accessibility score

79

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

opensubtitles.org best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

opensubtitles.org SEO score

57

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Document doesn't have a valid hreflang

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Opensubtitles.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Opensubtitles.org main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph description is not detected on the main page of Open Subtitles. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: